public class Test2_5 {
    public static void main (String args[]) {
        int [] a={10,20,30,40,},b[]={{1,2},{4,5,6,7}};
        b[0]=a;
        b[0][1]=b[1][3];
        System.out.println(b[0][3]);
        System.out.println(a[1]);
    }
}
